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<html lang="en">
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<p>
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Previous:&nbsp;<a rel="previous" accesskey="p" href="Other-Info-Directories.html#Other-Info-Directories">Other Info Directories</a>,
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</div>

<h4 class="subsection">21.2.4 Installing Info Directory Files</h4>

<p>When you install an Info file onto your system, you can use the program
<code>install-info</code> to update the Info directory file <samp><span class="file">dir</span></samp>. 
Normally the makefile for the package runs <code>install-info</code>, just
after copying the Info file into its proper installed location.

  <p><a name="index-dircategory-1320"></a><a name="index-direntry-1321"></a>In order for the Info file to work with <code>install-info</code>, you include
the commands <code>@dircategory</code> and
<code>@direntry</code><small class="dots">...</small><code>@end direntry</code> in the Texinfo source
file.  Use <code>@direntry</code> to specify the menu entries to add to the
Info directory file, and use <code>@dircategory</code> to specify which part
of the Info directory to put it in.  Here is how these commands are used
in this manual:

<pre class="smallexample">     @dircategory Texinfo documentation system
     @direntry
     * Texinfo: (texinfo).           The GNU documentation format.
     * install-info: (texinfo)Invoking install-info. ...
     ...
     @end direntry
</pre>
  <p>Here's what this produces in the Info file:

<pre class="smallexample">     INFO-DIR-SECTION Texinfo documentation system
     START-INFO-DIR-ENTRY
     * Texinfo: (texinfo).           The GNU documentation format.
     * install-info: (texinfo)Invoking install-info. ...
     ...
     END-INFO-DIR-ENTRY
</pre>
  <p class="noindent">The <code>install-info</code> program sees these lines in the Info file, and
that is how it knows what to do.

  <p>Always use the <code>@direntry</code> and <code>@dircategory</code> commands near
the beginning of the Texinfo input, before the first <code>@node</code>
command.  If you use them later on in the input, <code>install-info</code>
will not notice them.

  <p><code>install-info</code> will automatically reformat the description of the
menu entries it is adding.  As a matter of convention, the description
of the main entry (above, &lsquo;<samp><span class="samp">The GNU documentation format</span></samp>&rsquo;) should
start at column 32, starting at zero (as in
<code>what-cursor-position</code> in Emacs).  This will make it align with
most others.  Description for individual utilities best start in
column 48, where possible.  For more information about formatting see
the &lsquo;<samp><span class="samp">--calign</span></samp>&rsquo;, &lsquo;<samp><span class="samp">--align</span></samp>&rsquo;, and &lsquo;<samp><span class="samp">--max-width</span></samp>&rsquo; options in
<a href="Invoking-install_002dinfo.html#Invoking-install_002dinfo">Invoking install-info</a>.

  <p>If you use <code>@dircategory</code> more than once in the Texinfo source,
each usage specifies the `current' category; any subsequent
<code>@direntry</code> commands will add to that category.

  <p><a name="index-Free-Software-Directory-1322"></a><a name="index-Dir-categories_002c-choosing-1323"></a><a name="index-Categories_002c-choosing-1324"></a>When choosing a category name for the <code>@dircategory</code> command, we
recommend consulting the <a href="http://www.gnu.org/directory">Free Software Directory</a>.  If your program is not listed there,
or listed incorrectly or incompletely, please report the situation to
the directory maintainers (<a href="mailto:bug-directory@gnu.org">bug-directory@gnu.org</a>) so that the
category names can be kept in sync.

  <p>Here are a few examples (see the <samp><span class="file">util/dir-example</span></samp> file in the
Texinfo distribution for large sample <code>dir</code> file):

<pre class="display">     Emacs
     Localization
     Printing
     Software development
     Software libraries
     Text creation and manipulation
</pre>
  <p><a name="index-Invoking-nodes_002c-including-in-dir-file-1325"></a>Each `Invoking' node for every program installed should have a
corresponding <code>@direntry</code>.  This lets users easily find the
documentation for the different programs they can run, as with the
traditional <samp><span class="command">man</span></samp> system.

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